APPENDIX C: Modifications
CAUTION N These modification instructions are for use by qualified personnel only. To avoid electric shock, do not perform any
servicing other than changing the fuse unless you are qualified to do so. Refer all servicing and modifying to qualified personnel.
We have included step-by-step instructions forI. AUX Send mod
This modification changes the tap point of allfive different 8YBus console modifications. Before
we go any farther, consider that performing ANY
Opre� AUX sends from post-EQ to pre-EQ. It must
modification will place your factory warranty in
be done on each channel. For example, if you have
jeopardy. Here is the Official Mackie Statement:
a 24Y8, the modification must be done on all 24
input channels.
Official Disclaimer
See Figure 8. This modification takes place on
Any modification of any Mackie Designs
each channel strip in an area under the AUX 1/2
Pre/Post switch.product must be done by a competent
electronic technician. Mackie Designs, Inc.,
1. Remove power cable.
accepts no responsibility for any damages or
2. Cut the conductor at Point A.
injuries caused by any modification, regard-
less of the source of the modification3. Add a jumper at Point B.
instructions or the qualifications of the tech-4. Repeat for all input channels.
nician performing them. In the case of such
damages, Mackie Designs may declare war-
ranty privileges void. BE CAREFUL!
To clarify�
These modifications are extremely easy, relative
to what a real technician is used to doing. How-
ever, they are extremely difficult and dangerous for
ADD-ONSthe inexperienced. If youOre not a qualified,
SPECSexperienced technician, donOt even think about
ETC.
considering the possibility of conceiving of doing
these mods yourself.
One of them (Mod V) actually changes the func-
tion of a switch so it no longer performs as labeled.
Ask around to find a decent repair/modifica-
tion shop that guarantees its own work in
writing (even then, your Mackie Limited War-
ranty can be in jeopardy). Better yet, wait until
the Warranty expires.
BEFORE
A note about adding jumpers during
these modificationscut here (A)
When a jumper or jumpers are called for, they
should NOT go into holes in the PCB. Rather,
they should be soldered to the flat, tinned area
around the hole (called a pad) and bowed
AFTER
slightly over to the other pad (see Figure 7 be-
low). Make sure the ends of those jumpers doadd jumper (B)
not extend beyond the pad.
Jumper
Figure 8: Modification I N Aux SendBEFORE
Holes
Figure 7
AFTERSolder
50 |
ACEC
MACKIE
